Soil Heavy Metal Accumulation and Ecological Risk in Mount Wuyi: Impacts of Vegetation Types and Pollution Sources

Land, Год журнала: 2025, Номер 14(4), С. 712 - 712

Опубликована: Март 26, 2025

Soil heavy metal (HM) contamination has become a critical global environmental issue, predominantly caused by industrial and agricultural operations. This study focuses on Mount Wuyi, UNESCO biodiversity hotspot major tea production base, to examine vegetation-mediated soil HM accumulation under anthropogenic impacts. We analyzed nine HMs (Mn, Cu, Zn, Cd, Hg, As, Pb, Cr, Ni) across diverse vegetation types using geochemical indices Positive Matrix Factorization (PMF) modeling. The findings revealed Mn Zn were dominant elements, Cr Pb concentrations exceeded regional background values 3.47 1.26 times, respectively. demonstrated significant pollution levels, while Cd Hg posed the highest ecological risks. Vegetation type significantly influenced distribution patterns, with cultivated areas shrublands (including gardens) accumulating higher of from transportation sources. Notably, bamboo forests exhibited natural resistance contamination. PMF analysis identified four primary sources: urbanization (27.94%), transport–agriculture activities (21.40%), practices (12.98%), atmospheric deposition (12.96%). These results underscore need for implementing clean energy solutions, phytoremediation strategies, tea-specific detoxification measures maintain security sustainability in this ecologically region.

Язык: Английский

---

Accumulation Pattern and Potential Ecological Risk of Heavy Metals in Topsoil as Affected by Diverse Sources in Different Ecosystems in Western Dabie Mountain

Forests, Год журнала: 2024, Номер 15(7), С. 1116 - 1116

Опубликована: Июнь 27, 2024

Soil heavy metal (HM) control has become a pressing global ecological and environmental issue, with significant focus on the western Dabie Mountain in China, region that is recognized for its barriers water sources. We analyzed concentrations, pollution status, potential risks of 10 HMs (i.e., Cu, +Pb, Zn, Cr, Ni, Co, Cd, As, Hg, Mn) topsoil different ecosystems this region. The effects four soil groups (Anthrosol, Fluvisols, Gleysol, Alisols) three texture types (sandy, clayey, loamy soils) above aspects were also analyzed. Positive Matrix Factorization (PMF) models performed to identify quantify sources contribution rates these HMs. Results showed level HM may be negligible, there was no risk. Of all metals, Pb Cd exhibited highest levels pollution. risk associated decreased from croplands urban further forests. Cu Co more likely accumulate Anthrosols, while Alisols Pb, Hg had higher overall clayey soils both than sandy soils. accumulation closely related organic matter clay contents. main can agricultural activities, parent material, mining, industrial vehicle emissions. These findings suggest special attention should paid Mountain. Future efforts reducing smelting, emissions, as well strengthening research migration patterns mechanisms

Язык: Английский

---

Assessment of Remediation Efficiency for Soils Contaminated with Metallic Mercury in Hydrocarbon Extraction Zones

Applied Sciences, Год журнала: 2024, Номер 14(19), С. 8690 - 8690

Опубликована: Сен. 26, 2024

Reducing mercury emissions to individual environmental compartments is now a global priority. However, undefined industrial sectors still pose risk for pollution, including the extraction, processing, and transport of crude oil natural gas. Mercury contamination in hydrocarbon extraction areas can occur around blocking bleeding systems, gas pressure reduction metering points, purification devices, reservoir water separators. The soil content depends on quality extracted fuel vary widely. This article reviews methods remediating mercury-contaminated soils, washing, acid thermal desorption, removal disposal, stabilization convert into less harmful forms. main objective work was present results pilot process remediation contaminated with metallic conducted an area. paper presented laboratory field test evaluating efficiency method at facility. site localized, primarily levels ranging from 1.6 mg/kg 1116 mg/kg. In 80% samples, were 2–8.5 times above acceptable limits. Speciation studies indicated that over 50% samples contained capable emissions. involved stabilizing by adding sulfur, forming stable sulfide (cinnabar). post-remediation measurements showed significant reductions air, demonstrating effectiveness immobilization procedure.

Язык: Английский

---

Sarayönü Region (Türkiye) Potential Toxic Element Content, Spatial Distribution, Ecological and Human Health Risks of Agricultural Lands and Wheat

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Сен. 12, 2024

Today, the beginning of many environmental problems is related to soil pollution. Potential toxic element accumulation in soils has feature persistence and for years. elements can show point diffuse spatial distribution by being carried some extent near their source point. may cause a decrease quality products areas where they are distributed, enter food chain put human health at risk. Sarayönü one most important agricultural centers Konya province. Approximately 10% agriculture activities province out district there no heavy industry. Mercury mining been within borders historical periods last fifty Some other potentially elements, especially mercury, arsenic, have transported dispersed spatially through abandoned mines, activities, streams passing ore zones. Chemical analysis wheat samples was performed. The results average, 16 (Cu), 2.1 (Pb), 66.4 (Zn), 0.52 (Ni), 5 (Mn), 22876 (Fe), 14.8 (As), 0.025 (Cd), 14 (Cr), 15116 (Al) 0.71 (Hg) ppm values were found. Hg (0.100), As Pb (0.130), Zn (0.400), Cu (0.30), Ni (0.060), Cr (0.35), Cd (0.0094), Al (1.60) Fe (0.95). found be well below reference ​​taken Turkey World. According soil, significant contamination mercury arsenic detected ecological risk factors locations S1 S7. No high carcinogenic children adults field.

Язык: Английский

---